Documentation/TODO

   1
   2  Note that items with (!) have high priority.
   3
   4 cal
   5 ---
   6    - add option to print calendar in vertical way
   7      https://github.com/karelzak/util-linux/issues/604
   8    - support another --reforms, see for example freebsd version
   9      https://github.com/freebsd/freebsd/blob/master/usr.bin/ncal/ncal.c#L72
  10
  11 column
  12 ------
  13    - add option to NOT ignore empty lines
  14      https://github.com/karelzak/util-linux/issues/593
  15
  16 script
  17 ------
  18    - think about optional "event" records in timing file to save information
  19      about non-data changes like signals (SIGWINCH, SIGSTOP, SIGCONT, etc.)
  20      in format:
  21
  22              <time> 0 <name>[: var=data, ...]
  23
  24      for example:
  25
  26              0.001296 256
  27              0.001297   0 SIGWINCH: columns=50, lines=20
  28              0.000010 275
  29
  30 lsblk
  31 -----
  32    - rewrite lsblk to read all devices tree to memory to make it more extendable. Now
  33      it always keep in memory just one device (only final output is buffered by
  34      libsmartcols, but this stuff are output strings, nothing else).
  35
  36      See fopr example: https://github.com/karelzak/util-linux/issues/616
  37
  38
  39 cleanup lib/path.c: [Karel Zak for v2.33]
  40 ------------------
  41    - always return rc from all functions
  42    - introduce control struct and use openat() from top-level path
  43      (e.g. top-level is /proc, etc)
  44    - use lib/path.c as low-level API for lib/sysfs.c
  45    - now we duplicate code in functions like {path,sysfs}_read_u32, etc.
  46    - it would be also nice to have a way how to redirect sysfs.c functions
  47      to /sys snapshots (e.g. lsblk regression tests)
  48
  49
  50 lscpu
  51 -----
  52   - read cpuid and uname information from file if --sysroot is specified, then
  53     we can prepare regression tests completely independent on hw and architecture.
  54
  55 lsblk
  56 -----
  57   - add --sysroot to read sysfs data from dumps rather than from a real sysfs
  58   - add regression tests based on --sysroot
  59
  60   - re-write the way how lsblk internally holds info about devices. Now we
  61     compose only output (by libsmartcols). It would be better to have in memory
  62     complete tree of the devices and generate the output from this tree. It will
  63     make code more readable and allow to generate output in more ways -- for
  64     example for RAIDs (https://github.com/karelzak/util-linux/issues/616)
  65
  66   - currently it does not show mountpoint for all devices in btrfs RAID. It's because
  67     /proc/#/mountinfo contains reference to the one device only. Maybe we can add some
  68     btrfs specific code to provide a better output for FS based stacks. Not sure.
  69     https://bugzilla.redhat.com/show_bug.cgi?id=1084453
  70
  71 nsenter(1)
  72 ----------
  73  - read the default UID and GID from the target process.
  74    http://thread.gmane.org/gmane.linux.utilities.util-linux-ng/9553/focus=9585
  75
  76 hwlock
  77 ------
  78  - use /var/lib/hwclock/drift to store hw-clock drift numbers.
  79  - use /etc/adjtime as read-only for UTC/LOCAL information only
  80  - the /var/lib/hwclock/drift should be implemented backwardly compatible,
  81    it means use the file only if exists, otherwise follow /etc/adjtime
  82
  83 bash completion
  84 ---------------
  85 - Optional argument handling requires user to press backspace to get
  86   argument completion.
  87 - Comma separated value, e.g., --output 'value1,value2', are not
  88   completed for users.
  89
  90 libmount (mount/umount)
  91 -----------------------
  92
  93  - remount all filesystems given their type, for example:
  94         mount -a -t tmpfs -o remount
  95    It should be probably enough to add remount_all() to mount(8) in way we
  96    already have mount_all().  https://github.com/karelzak/util-linux/issues/589
  97
  98  - add --onlyonce to force mount(8) to check if mountpoint is already used. Now
  99    "already mounted" detection is used for --all only. The problem is if you
 100    call "mount <mountpoint>" more than once for in fstab defined tmpfs (or network
 101    filesystem etc.). In this case kernel does not return EBUSY, but a new instance
 102    of the FS is created. https://github.com/karelzak/util-linux/issues/448
 103    (... just idea, maybe wrong idea)
 104
 105  - support CAP_SYS_ADMIN; for mount(2) syscall the CAP_SYS_ADMIN is good
 106    enough. Unfortunately, mount(8) does more things like check for filesystem
 107    type (but it's usually done by udev, so root perms are unnecessary), create
 108    loop devices, write to /run/mount/utab or /etc/mtab, etc.
 109
 110    It would be nice to improve libmount to check for CAP_SYS_ADMIN if suid not
 111    set and allow to use it for simple tasks where no another operation is
 112    necessary.
 113
 114 partx
 115 -----
 116
 117  - support mapping by device-mapper if argv[0] is "kpartx" or --dm option is used.
 118
 119
 120 docs
 121 ----
 122
 123  - (!) use something better than gtk-doc for libmount and libblkid (doxyden?)
 124
 125  - (!) add API documentation to libuuid
 126
 127 exit codes
 128 ----------
 129
 130   - we need coreutils-like exit codes for failed exec(). See:
 131     https://www.spinics.net/lists/util-linux-ng/msg12776.html
 132     and original attempt:
 133     https://github.com/karelzak/util-linux/pull/311
 134
 135 login-utils:
 136 -----------
 137
 138   - consolidate newgrp(1)
 139     * we have "su --group/--supp-group" to switch between groups, newgrp(1) in
 140       util-linux and shadow-utils (and sg(1) alias in shadow-utils)
 141     * the unique functionality provided by newgpr(1) is support for group
 142       passwords [/etc/gshadow] -- do we really need this functionality?
 143     * maybe we can mark group-passwords as deprecated, and replace sg(1) and
 144       newgpr(1) with su(1) code. The another way is to ask for group password in
 145       su --group too.
 146     * note that shadow-utils newgpr(1) provides support for syslog and audit log.
 147
 148
 149 libblkid
 150 --------
 151
 152  - (!) add support for BitLocker Drive Encryption
 153    https://github.com/karelzak/util-linux/issues/617
 154    https://github.com/libyal/libbde/blob/master/documentation/BitLocker%20Drive%20Encryption%20(BDE)%20format.asciidoc
 155
 156  - (!) add support for dasd PT (used for example on s390)
 157
 158 libfdisk
 159 --------
 160
 161  - add support for Apple Partition Map (see libblkid/src/partitions/mac.c)
 162    http://en.wikipedia.org/wiki/Apple_Partition_Map
 163
 164 misc
 165 ----
 166
 167  - add mllockall() and SCHED_FIFO to hwclock,
 168    see http://lkml.org/lkml/2008/10/12/132
 169
 170
 171 ---------------
 172 exotic requests
 173 ---------------
 174
 175  - add SELinux security contexts support to the 'ipcs' utility
 176    http://bugzilla.redhat.com/show_bug.cgi?id=225342
 177
 178    Would be great to list the current system IPC Objects with their respective
 179    security labels (where allowed) with something like 'ipcs -Z' - following the
 180    way other tools reports those.
 181
 182